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Ryan C. Gordon e2ec1eb12e audio: converting int32 to/from float shouldn't use doubles. 
The concern is that a massive int sample, like 0x7FFFFFFF, won't fit in a
float32, which doesn't have enough bits to hold a whole number this large,
just to divide it to get a value between 0 and 1.
Previously we would convert to double, to get more bits, do the division, and
cast back to a float, but this is expensive.

Casting to double is more accurate, but it's 2x to 3x slower. Shifting out
the least significant byte of an int32, so it'll definitely fit in a float,
and dividing by 0x7FFFFF is still accurate to about 5 decimal places, and the
difference doesn't appear to be perceptable.
 		2018-05-15 01:04:11 -04:00
..
atomic Updated copyright for 2018 2018-01-03 10:03:25 -08:00
audio audio: converting int32 to/from float shouldn't use doubles. 2018-05-15 01:04:11 -04:00
core Reimplemented Android cursor API support using reflection so it builds with older SDKs 2018-03-16 11:08:53 -07:00
cpuinfo cpuinfo: Added SDL_HasAVX512F(). 2018-05-21 11:35:42 -04:00
dynapi cpuinfo: Added SDL_HasAVX512F(). 2018-05-21 11:35:42 -04:00
events Fixed building on platforms without __sighandler_t 2018-01-30 18:12:25 -08:00
file Updated copyright for 2018 2018-01-03 10:03:25 -08:00
filesystem revert the recent typecast assignment changes (see bug #4079) 2018-02-12 17:00:00 +03:00
haptic Updated copyright for 2018 2018-01-03 10:03:25 -08:00
joystick Merged latest changes from Steam Link app 2018-05-18 13:09:30 -07:00
libm Fixed misleading indentation 2018-01-30 16:53:24 -08:00
loadso Updated copyright for 2018 2018-01-03 10:03:25 -08:00
main Fixed bug 4073 - Unquoted Unicode argument parsing broken on Windows due to incorrect usage of SDL_isspace() 2018-02-10 12:43:11 -08:00
power Handle NULL return from SDL_DBus_GetContext() 2018-04-23 20:24:12 -07:00
render do the direct3d tap dance for overscan hint only if SDL_VIDEO_RENDER_D3D == 1 2018-05-10 08:25:23 +03:00
stdlib make sure SDL_vsnprintf() nul terminates if it is using _vsnprintf 2018-05-10 09:02:39 +03:00
test SDL_test_fuzzer.c: fix strict aliasing warnings by using a union. 2018-02-25 10:15:00 +03:00
thread Fixed build 2018-04-23 22:17:56 -07:00
timer Updated copyright for 2018 2018-01-03 10:03:25 -08:00
video Merged latest changes from Steam Link app 2018-05-18 13:09:30 -07:00
SDL.c Fixed bug 4034 - Don't include _DllMainCRTStartup() if SDL_STATIC_LIB is defined. 2018-02-21 09:40:47 -08:00
SDL_assert.c Progress fixing bug 4100 - errors and warnings after changeset 11917 2018-03-02 22:53:25 -08:00
SDL_assert_c.h Updated copyright for 2018 2018-01-03 10:03:25 -08:00
SDL_dataqueue.c Updated copyright for 2018 2018-01-03 10:03:25 -08:00
SDL_dataqueue.h Updated copyright for 2018 2018-01-03 10:03:25 -08:00
SDL_error.c Updated copyright for 2018 2018-01-03 10:03:25 -08:00
SDL_error_c.h Updated copyright for 2018 2018-01-03 10:03:25 -08:00
SDL_hints.c Updated copyright for 2018 2018-01-03 10:03:25 -08:00
SDL_internal.h Updated copyright for 2018 2018-01-03 10:03:25 -08:00
SDL_log.c Updated copyright for 2018 2018-01-03 10:03:25 -08:00